So this is technically a wikiHow, but the point remains:
5/8/09: How to Cheer Up
Get the f*ck over it in just 8 easy steps! Also, from the "tips" section:
"Learning How to Be Optimistic is a good way to ensure cheeriness in the long run."
In other news, the #1 'How To' over at eHow.com is "How to Clean a Dog's Ears"